Adjustable arm for reversible-car-seat backs.



PATENTED AUG. 2l, 1.906.

No. 829,078. R. L. MANGAN.

ADJUSTABLE ARM FOR REVERSIBLE GAR SEAT BACKS.

APPLICATION FILED 0^0T.2, 1905.

Q/vibncooco attenua* UNITED STATES PATENT oEEioE.

ADJUSTABLE ARM FOR REVERSIBLE-CAR-SEAT BACKS.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed October 2,1905. Serial No. 281,073.

To n/Z r11/tom, t may concern:

Beit known that I, ROBERT L. MANGAN, a citizen of the United States, residing at Springfield, in the county of Greene and State of Missouri, have invented certain new and useful Improvements in Adjustable Arms for Reversible-Car-Seat Backs, of which the following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to attaching means for the backs of car-seats, and has for its object to provide stable means for securing the back to the seat portion well adapted to withstand the strain put upon it.

It is a further object of my invention to provide certain new and useful improvements in this class of devices to enable the seat to be easily and readily reversed.

With these and other objects in view the invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings accompanying and forming part of this specification, Figure 1 is a perspective view of the end of a car-seat, illustrating the device in connection therewith. Fig. 2 is an end elevation in which the reversed position of the back is shown in dotted lines. Fig. 3 is a perspective view of the arm members. Fig. 4 is a similar view of the plate member. Fig. 5 is a similar view of the mortisedrail of the back in which the'plate member is secured.

Referring to the drawings, in which like numerals of reference indicate corresponding parts throughout the several views, 1 is a carseat provided with a back 2. The means for supporting the back consists of a plate meinber 3, which is secured thereto, and two arm members 4 and 5, pivotally'attached at their lower ends to the car-seat and at their upper ends to the plate member in a similar manner. In its preferred embodiment the device is constructed as follows: The plate member 3 has an ear 6 and an inwardly-formedflange 7, extending around the edge to the ear. This iiange is adapted to enter a mortisegroove 8 in the end rail 9 of back 2, said groove and flange forming, in eect, a dovetail connection, the plate member 3 being held in position by the snap-springs 23. One end of each spring is rigidly secured to the seat-back, and the other end is provided with a laterally-projecting point or lug 24, which passes through one of the apertures 10 in the flange and thence into an'aperture 25 in the seat-back. The arm members 4 and 5 are formed of fiat steel rods having their opposite upper edges 11 and 12 cut away to accommodate lugs 13 and 14, formed on the adjacent faces of their upper ends. The lower ends 17 and 18 of the arm members extend laterally in opposite directions and are provided with shoulders 19 and 20 on their adjacent faces for purposes which will be hereinafter explained. Formed on the edge of the arm member 4 opposite its extended end 17 and somewhat above it is a tongue 21, bent laterally and inwardly to form a guide and stop for member 5, as shown.

The members 4 and 5 are pivoted at their lower ends to the frame of the seat and at their upper ends to the ear 6 of plate member 3, the pivots in both seat and plate member being a short distance apart. It will be observed that with this construction and arrangement of parts when the arm members 4 and 5 are approximately vertical the plate member is at substantially right angles thereto; but movement of the arm members in either direction decreases the angle on the side of such movement very rapidly, thus bringing the back 2 against the edge of the seat with very little swing of the arm members. The guide 21 is provided to hold the two arm members in contact with each other, and if found desirable a similar guide may be provided on the corresponding side of member 5.

While it is preferred to have the lower part of the back 2 rest against seat 1, it is not necessary in order that my device may be operative, as the movement of the back may be limited by the shoulders 15 and 20 coming in contact with the adjacent parts, as shown Iin Fig. 2.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is*

1. In a device of the character described, the combination, with a car-seat, and a back provided with a mortised groove, of a plate having an inwardly-disposed flange extending partly around the edge thereof and adapted to be received within said groove, and

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means secured to said plate and adapted to Y hold the back in position.

2. In a device of the character described, the combination, with a car-seat, and a back provided with a mortised groove, of a plate having ,an inwardly-disposed flange formed part way around the edge thereof adapted to be received within said groove, arm members having reduced upper end portions and laterally and oppositely extending lower end portions pivoted respectively to the plate and seat, for the purposes hereinbefore set forth.

3. In a device of the character described, the combination, with a car-seat, and a back provided with a mortised groove, of a plate having an inwardly-disposed flange extendring partly around the edge thereof and adapted to be received within said groove, means secured to said plate and adapted to hold the back in position, and means connected with the back and engaging the flange whereby said plate is removably held in position.

4. In a device of the character described, the combination, with a car-seat, and a back provided with a mortised groove, of a plate having an inwardly-disposed flange extending partly around the edge thereof and adapted to be received within said groove, means l 

